Method of snow disposal.



c. EVANS, Jn. METHOD, or snow DISPOSAL. APPLICATION FILED MAB.20, 1911.

995,446. .7 Patented June 20, 1911.

WITNESSES INVENTOR- UNITED STATES PATENT/OFFICE,

canwanriazonn EVANS, an, or rrrrseune, rnnNsYLva-nr 1 T(i 'qlt'whom"it may concern: fi'e tnown that I, GADWALLADER EvANs, J' a itiz'en of the Unitedfitates, and resis dent-, of l?ittsburg, Allegheny county, Penn- 5 syl a 'a, "have ;invented a. l l wf'and useful Math (l'iof 'Snow Disposal, 0 f, which the fol-- lowing is aspec'ification, a W invention rel tes principally to a rhethodpfremoving snow from the streets of 'la'i'gefcitie'sto avoid interference with traffic thereon.

I have discovered that freshly fallensnow may be reduced by agitation alone, to a sufliciently fluid condition to be forced through 5 a pipe by any convenient means as for instance fluid pressure used directly such as air, steam, or water or by any suitable mechanical device such as a centrifugal pump, and that snow which has been subjected to the compressive actionof street traflic, even when it has reached a condition bordering on the hardness of ice, or when mixed with actual ice, may bereduced to a similar condition by agitatiomand the addition of a slight amount of water. It is not necessary in either case to reduce the mixture to a real fluid, which will flow of its own accord, nor if ice be present is it necessary to reducethe ice to a finely subdivided state. Lumps of ice of several inches diameter may be car-' ried when in a semi-fluid slush, such as is used by my improved method.

The removal of snow in American cities costs a vast amount of money annually,'andthe present process takes further toll on the health and lives of the laborers employed, as the work must of necessity be done in. in- "clement weather and under conditions inimical to-health.

40 The present method of removing snow from streets is very crude, and is accomlished usually by men with shovels, who oad the snow into wagons, from whence it is hauled tothe nearest sewer opening, and

- discharged therein. This process is necessarily slow, and consequently expensive, as a large force of men and teams must be employed to cover any considerable'area, it being usually nece'ssaryto completely'remove the snow within a few hours time. I am .aware that various methods have been sugested to facilitate the handling of this probi em. For instance, it hasbeen proposed-by several inventorsto melt the snow by the METHOD or snow nisrosA'L. H

Specification of Letters Patent. .Pateilttl" 1 Application filed March 20, 1911. Serial No. $5,557., M

.anism, thus meltin ,case is it desirable to dischaige ers may also be provided to lift the snow di- 55. application of has nd allow the water thus formed to frun if ,oithe sewers the patent to; 'D. 'Hommergu Tl'l-gfibxflg M Dense q it s, p c s s ;nfisjall; .t-psehibia, y and it works P 911 y-z'i ai a weathers? as much of the water f reezes -aga,in gbejore reaching the sewer, [t ;has,;also ,beesx'gfpmposed to tritur ate the S119 y ictiomias' in the pat f- 818072.. Other inventors have shown by Muller ell al of thesg; processes are pra, tooexpe'nsive "too slow; or;

. .eisista s' snow onthe streets for gravity flow to the sewers. i

By my improved method the snow and ice mixed therewith may be expeditiousl removed at small cost, and at great spee and conveyed directly to the nearest sewer without being a second time in contact with the street.

My im roved method is independent of any speclfic a paratus, and may be performed manua but greater s eed may. be. obtained by the use of suitabe apparatussur-h-as-will now be described. a

-The truck A, mounted on the wheels B, carries a hopper O, to which the snow may.

be delivered manually, or by suitable mechanism. The hopper C discharges into-an agitator D, whose principal function is to reduce the fine snow to slush by agitation thereof,-and to break up masses of'caked ice or snow, into lumps small enough to enter the pump F. If necessary water may be en plied to agitator D, through ipe E. The pJump F, receives the mixture rom agitator and forces the same under pressure through the large hose H, to the nearest seweiz. Pump F, and agitator D, are driven by a motor G, herein represented as a gas engine. The hose H maybe of any desired length, as for instance equal .to one or two city blocks, and the truck may therefore move forward continuously toward the snow to be removed, at the same timebeing all times. in direct connection with the sewer.

.If desired, the engine G can be arranged topro el the truck wheels B, and the exhaust om the engine G can be turned into the agitator D,or pump' F, to assist the process by its contained heat. Suitableconvey- 1 10 i'ectly from thestreet intothe hopper C.

The pipe E may be connected, by a small for carrying out my im rove value and usefulness 0 which is thereby greatly enhanced.

hose, of any desired length, to the nearest street h drant.

It wi 1 be obvious thatmany simple and' efiicient forms of apparatus ma be provided method, the

It will be noticed that I do not-'triturate the snow or ice nor reduce either to a finely divided state,'1t being sufficient merely to provide enough fluid 'to'act as a carrier for the remainder of the mass;

I claim as my invention: 1..The method of removing snow from city streets comprising the following steps: 1st,-gatheringt e'snow; 2nd, a'gitatmg the same; 3rd, forcing the agitated mixture to a distant point.

. 2. The method of remoylng snoyv from city streets comprising the following steps:

1st, gathering t e snowy; 2nd; agitatingthe same; 3rd, pumping the agitated mixture to a distant point.

3..The method of removin snow from city streets com rising the fol owing steps: 1st, gathering 't 1e snow; 2nd, agitating the same; 3rd, adding water during the agitation; 4th, forcing the mixture to a distant point.

4. The method of removin snow from city streets com rising the fol owin steps:

1st, gathering t e-snow; 2nd, agitating the same; 3rd, heating the mixture during agitation; 4th, forcing the mixture to a distant point. 7.

5. The method of removing snow from city streets, comprising the following steps:

1st, gathering the snow; 2nd, agitatmg the same; 3rd, adding water during agitation;

4th, heating the -mixture during agitation;

5th, forcing themixtnre to a distant point. CADWALLADER EVANS, JR.

Witnesses: a

W. W. MAomRREN, Rosn Nnvm. 

